V-Lab
NX Filtration N.V. GAS-GARCH Student T Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
71.30%
increased by 17.00%
1 Week
72.72%
increased by 18.42%
1 Month
78.02%
increased by 23.72%
Analysis last updated: Tuesday, August 25, 2026 at 06:34 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 15, 2021 to Aug 21, 2026Model Insight
With persistence 0.996, volatility shocks have a half-life of 163 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 2.96 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 116.7822 | 5.36*** |
α ARCH Response to squared shocks | 0.1706 | 65.84*** |
β GARCH Volatility persistence | 0.9958 | 1,381.08*** |
ν DF Student-t tail thickness | 2.9569 | 60.67*** |
Persistence:
0.996
Half-life:
163 days
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